Gas attachment for ranges.



Patented Mar. 26, l90l.

F. L. SHEPPARD GAS ATTACHMENT FOB RANGES.

(Application filed Nov. 25, 1898.) 1 (No Model.) 2 Shoots-Sheet l.

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No. 670,740. Patented Mar. 26, mm.

P. L. SHEPPARD. GAS ATTACHMENT FOR RANGES.

(Application filed Nuv. 25, 189B.)

2 Shays-Sheet 2.

(No Model.)

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SPECIFIGATION forming part of Letters Patent No. 670,740, dated March26, 1901.

Application filed November 25, 1898- Serial No. 697.419. (N model.)

To all whmit 7125 may (JO/08777:

Be it known that I, FRANKLIN II-SHEPPARD, a citizen of the UnitedStates, residing in Philadelphia, Pennsylvania, have invented certainImprovements in Gas Attachments for Ranges, ofwhich the following is aspeci ficaiiou.

My invention relates to certain improvements in gas burning attachmentsfor cooking-stoves.

The object of my invention is to construct the attachment in such amanner that the draft of the ordinary cooking-stove will not affect. theburning of the gas attachment; and a further object is to make thedevice detachable, so that the gas-heater can be entirely removed.

In the accompanying drawings, Figure 1 is a perspective view of myimproved gas attachment for cooking-stoves. Fig. 2 is a sectional viewshowing a portion of the stove with the gas attachment in position. Fig.3 is aplan view, partly in section, of Fig. 2. Fig. is a perspectiveview showing a double attachment with two burners. Fig. 5 is a view of amodification; and Fig. 6 is a sectional view of the top plate of thestove, illustrating one of the details of my invention.

A is the body of the stove, having the top plate a and a side plate a.

B is the main gas-supply pipe, mounted on one side of the range orstove, and this pipe has a valved extension Z), which passes through anopening a in the side plate a.

Adapted to one of the holes in the top plate ct is a cup-shaped frame D,havinga circular groove dtherein, and above this groove is a detachablecover-ring a, notched in the present instance at each side, so as toform gaspassages for the escape of gas. The grooved portion d and thecap-ring 6 form the annular gas-passage. This passage is connected tothe iiiixiiigpassage d, which terminates at 00, Fig. The end of thepassage cl is of such a size that it will extend around the end of thetube 0, attached at c to the side plate ct of the range. An aininletopening 0 in the tube allows air to enter the tube and become thoroughlymixed with the gas in the passage d. The frame D isdished to such anextent that the gasring will be a sufficieut distance belowthe top of'the range that a vessel with the interior of the range, consequently tthe ordinary draft of the flue will not affect in any way the flame ofthe gas-burner.

It will be seen that the frame D can be readily removed from the rangeby simply lifting it out, the construction being such that it can bereadily detached from the tube 0 as it is removed.

I preferably notch the flange d of the frame at d and form recesses clin the inner depending rim of the top plate to receive theflange-sections d so that the ordinary covers may be placed over theopenings in the top plate of the stove without interfering with theapparatus, although it will be understood that a plain flange may beused on the frame D, as shown in Fig. 5, by lowering the inner dependingrim of the top plate.

In Fig. 5 I have shown a modification in which the air to be mixed withthe gas is taken principally from the outside of the range instead ofthe inside, as shown in Fig. 2. The tube 01 has an extension d whichenters an opening in the plate a, and in this opening is secured adamperf, having an annular slide f, which can be turned so as to admitmore or less air into the tube (1 The valved extension I) of thegas-pipe extends a short distance into the tube d as shown. By thisarrangement the amount of air and gas can be regulated as desired.

In Fig. 4 I have shown a frame D, formed with two independent burnersand connections. This frame is of such a size as to fit the two openingsin the top plate of the stove ing arranged belowthe level of thetopplate, said frame having a flange adapted to rest on the flangeof thetop plate whereby a subthe burner, and a gaspipe secu red to the stovebelow the top plate and leading "to but not connected to the gas-burner,substantially as described. t J

2. The combination in a cooking stove or range,ofa top plate having anopening therein and having a deep flange surrounding said opening andextending below the level of said plate, a cupped frame having amixing-chamber, aloose plate above the same having gas-.

passages forming a burner, said burner being located'wholly within thecupped frame, and a gas-pipe communicating with said mixingchamber andsuitably connected'to the stove belowthe top plate, said frame having aflange resting on the flange of the opening in the top plate and havingan opening for the reception of the gas-pipe, the connection betweensaid pipe and the frame being such that the draft of the stove will notaffect the action of the burner, substantially as described.v

3. The combination in a cooking stove or range, of a top plate having anopening therein and having a deep flange surrounding said opening andextending below the level of said plate, a detachable cupped framehaving a flange adapted to rest on the flange of the opening in the topplate and forming a partition between the interior of the stove and thegas-chamber, said frame having a mixing chamber therein, and a, looseplate having gas-passages forming a burner mounted in the detachablecupped frame above the mixing-chamber,said bu rner being located whollywithin said frame with means arranged below the top plate of' the stovefor supplying gas to said burner, substantially as described.

4. The combination in a cooking stove or range, of a top plate having anopening therein with a flange below the level of said plate, a flangedframe adapted to said opening having a capped passage therein formingthe gasburner, a passage communicating with said burner and forming themixing-chamber, a gas-pipe secured to the stove below the top plate, anda fixed tube mounted on the range and surrounding said gas-pipe, saidpassage being open at one end and adapted to receive the end of the tubesurrounding the gas-pipe, substantially as described.

5. The combination in a cooking stove or range having top and sideplates, of a detachable dished frame having a gas-burner and a tubecommunicating therewith adapted to an opening in the top plate, saidframe forming a partition between the gas-chamber and the ter thepassage communicating with the gas-. I

burner, substantially as described.

6. The combination with a cooking stove or range having a top plate withan opening therein provided with a notched flange arranged below thelevel of said plate, of a burner attachment consistingof a dished framehaving a flange provided with projections adapted to the notches in theflange of the top-plateopening and carrying a burner,

a passage communicating therewith, a tubular extension secured to thestove and adapted to enter the burner-passage, and a fixed gas-pipeadapted to said tubular extension, substantially as described. v

7. The combination in a cooking stove or range, of a top plate having anopening therein and having a deep flange surrounding said opening andextending below the level of said plate, a detachable cupped framecarrying a gas-burner comprising-a loose plate with gas-passages thereinlocated above a mixingchamber, the whole arranged entirely within thecupped frame, said frame having a flange adapted to rest'on the flangeof the top plate, and a gas-pipe secured to the stove below the topplate of the same and leading to the mixing-chamber of the frame,substantially as described.

8. The combination in a cooking stove or range, of a top plate having anopening therein with a deep flange below the level of said plate, aframe carryinga gas-burner comprising a loose plate with gas-passagestherein with a mixing-chamber arranged below the same, said frame havinga flange adapted to rest on the flange of the top plate, a gas-pipesecured to the stove below the top plate and leading to themixing-chamber of the frame, a tube having an air-inlet surrounding saidpipe and also communicating with said mixing-chamber,said bu rner-framebeing detachable from the top plate ofthe stove, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FRANKLIN L. SHEPPARD.

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